Naseby, Northampton, United Kingdom · Sunday, May 9, 2027

Fixed Distance 50K

Northants Ultra 35 Shires & Spires

235 days away

56 km Distance

not publishedn/a Climbing

2.8 est Grit · Entry level

Calculated from 56 km alone — the organiser has not published an elevation profile. Read 2.8 as a floor, not a verdict.

52.2503° N, 0.9022° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 9 hours 9:39 min/km average. Comfortable. Room to walk the climbs and stop at aid. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 80% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →

Field size ~103 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 edition (35mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, May

Daytime high 17°C

Night low 7°C

Rainfall Mostly dry

Daylight 15 h 20 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 74 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 56 km of trail.

Trail Running Shoes56 km of trail — cushioning that is still there in the last quarter.
Race Nutrition56 km of self-supported fuelling between aid stations.
Hydration VestsFlask capacity for 56 km, without the bounce.
GPS WatchesBattery life first — a 56 km day outlasts most full-GPS modes.

Adidas

Terrex Agravic Speed Ultra

★★★★★ 4.5

La Sportiva

Prodigio Pro

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Garmin

Enduro 3

Ultra-endurance GPS watch with solar charging and 300+ hour battery in GPS mode.

$900 ★★★★★ 4.8

All gear guides →

Course Notes

35 mile circular Ultra Marathon with a mixture of trails and roads. It starts and finishes at Naseby Village Hall which is a great central location close to the A14, M1 and M6 motorways.

Similar races

Other 50K trail ultras, closest in distance first.